Good Luck Buy Gopro Gimbal Tuning Help

Hey guys. For the past few weeks I have had such a hard time tuning a goodluckbuy gimbal. Is there a certain way to set it up? The pitch axis has been the most trouble. I've tried a power of around 75 with the PID's set extremely low (8/.01/6) yet it still twitches and vibrates. I can't figure it out. Thanks for any advice!